Não informado. (1985). National safety and health news. National Safety Council.
Lua i Stíl Chicago (17ú heag.)Não informado. National Safety and Health News. Chicago, Ill: National Safety Council, 1985.
Lua MLA (8ú heag.)Não informado. National Safety and Health News. National Safety Council, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.